HSS step drill bit. 

1. Spiral grooved; 

2. Surface without discoloration 

3. Right hand cutting; 

4. Point thinning according to DIN1412 C; 

5.118 point angle; 

6. High performance steel. 

7.90 point stepped angle; 

8. Absolute smooth operation; 

9. High cutting achievement; 

10. Cutting edge has thinning point; 

11. Tin-coated finish; 

The cone simplifies the retracting through bored sheet metals; 

Higherfeed especially in NE metals possible due to the slim cutting edge.